echo {a..z}
# a b c d e f g h i j k l m n o p q r s t u v w x y z

for var in "{a..z}"
do 
    printf "%s \t" $var
done 
# {a..z}

for var in {a..z}
do 
    printf "%s \t" $var
done 
# a       b       c       d       e       f       g       h       i       j       k       l       m       n       o       p       q       r       s       t u        v       w       x       y       z       



